Yashwantrao Chavan Maharashtra Open University 2006 Certification TML Applied Chemistry - Question Paper

TML032/EE/20070814
Applied Chemistry
Time : 180 minutes Marks : 100
Instructions for the students :
1. All ques. are compulsory.
2. “Long ans kind ques. (LAQ)” is a supply kind ques. of 20 marks,
which require typical ans of about 60-80 lines in about 32-40 minutes.
3. “Short ans kind ques. (SAQ)” is a supply kind ques. of five marks,
which require typical ans of about 15-20 lines in about 08-10 minutes.
4. Use of non-programmable kind of scientific calculator is allowed.
5. Draw neat diagrams wherever necessary.
6. presume suitable data if necessary.

Long ans kind ques. (LAQ’s)

1. (a) elaborate the sub-atomic particles ? provide short accounts of
every particle.
(b) What is a difference ranging from isotopes and isobars ? provide the
three isotopes of Hydrogens.
(c) State the Rule of Maximum Multiplicity Principle. discuss the
electronic configuration of carbon on the basis of this principle.
(d) provide the characteristic properties of ‘p’-block elements. State
their general electronic configuration.

2. (a) State and discuss the important points of Arrhenius theory of
ionization.
(b) discuss the subsequent terms :
i) Equivalent Weight ii) Activity Series
(c) discuss the method of copper refining by electro-refining
technique.
(d) Write a short note on Lead Accumulator.

3. (a) provide the electronic configurations and the position of the
subsequent elements in periodic table
i) Carbon ii) Aluminium
(b) State and discuss commonly uses heat treatments to harden
the steel.
(c) describe corrosion. provide factors affecting atmospheric corrosion.

(d) discuss the properties of lubricants with respect to :
i) Viscosity ii) Oilness iii) Volatility
iv) Emulsification v) Oxidation stability


(a) Write the structure of the subsequent molecules :
i) Methane ii) Chloroform iii) Ethylene
iv) Acetylene v) Carbon tetrachloride
(b) What is thermocole ? provide its formation, properties and uses.
(c) How cold lime-soda process is used in softening of water ?
provide the diagram of batch and continuous process.
(d) describe the terms ceramics, glass and paper. discuss plasticity
property of clays.

Short ans kind ques. (SAQ’s)
5. Write the accurate orbital notation for every of the subsequent set of
quantum numbers.
a) n = 1, l = 0,m = 0 b) n = 2, l = 2,m = +1
5
6. compute the hydrogen in concentrations of the solutions where pH
values are :
a) pH = 2.0 b) pH = 3.0 c) pH = 8.0 d) pH = 13
State the acidic or basic nature of the solution.
5
7. provide the 4 atlotropic forms of iron. discuss their properties. 5
8. elaborate the units of hardness of water ? provide relationship
ranging from every of them.

Earning:   Approval pending.